Keeping a spare battery on hand ensures that you will always be ready to capture the images you want most. And, while Li-ion rechargeable batteries are less prone to recharge memory, using the normal complete charge of one battery before recharging will better ensure optimum rechargeable battery life. A freshly charged spare battery allows this and provides uninterrupted photography. The EN-EL3e is compatible with the Nikon D700, D300, D200 and D70 as well as Nikon Digital SLR Cameras that accept the Nikon EN-EL3 or EN-EL3a Rechargeable Li-ion Batteries.